Created attachment 141608 [details] No default value See screenshot, it tells the whole story.
I remember having this problem in testing and fixing it but I can confirm it's happening (again)
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwayland-server/-/merge_requests/295
Git commit bacaa8e77529baaf18dc97649b411de05543e5c8 by Xaver Hugl. Committed on 17/09/2021 at 14:36. Pushed by zamundaaa into branch 'master'. fix rgb range sending M +1 -0 src/server/outputdevice_v2_interface.cpp https://invent.kde.org/plasma/kwayland-server/commit/bacaa8e77529baaf18dc97649b411de05543e5c8
Git commit b8b225a96a6be0408a5524309b5db6bc2500983b by Xaver Hugl. Committed on 17/09/2021 at 16:23. Pushed by zamundaaa into branch 'Plasma/5.23'. fix rgb range sending (cherry picked from commit bacaa8e77529baaf18dc97649b411de05543e5c8) M +1 -0 src/server/outputdevice_v2_interface.cpp https://invent.kde.org/plasma/kwayland-server/commit/b8b225a96a6be0408a5524309b5db6bc2500983b